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Title: Ways to attach Battery. Post by: MohitJindal on January 16, 2013, 09:55:42 AM Hi; I want to give extra current to the DC motor; without damaging the SMD circuit board. The circuit board is giving 1amp to the motor. I want to replace motor with big 5amp motor.Is there any way to attach extra battery which provide power only to the motor, not back to circuit board :help: :banghead: :(
Title: Re: Ways to attach Battery. Post by: lastRites on January 16, 2013, 10:11:47 AM Yeah there are a number of ways to accomplish that. Just tell us if you need to control the speed(through pwm) and if you need bidirectional control.
Title: Re: Ways to attach Battery. Post by: MohitJindal on January 16, 2013, 10:19:15 AM Its a DC servo motor. So both PWM and bidirectional.
Title: Re: Ways to attach Battery. Post by: lastRites on January 16, 2013, 01:14:59 PM Servo? Then why would you need a different controller???
Title: Re: Ways to attach Battery. Post by: MohitJindal on January 16, 2013, 01:20:49 PM I don't want different controller. I just want to give extra power to dc motor without burning the servo circuit.
Title: Re: Ways to attach Battery. Post by: lastRites on January 16, 2013, 01:31:22 PM Can you be a little more specific please? Here are your options:
PWM and UNIdirection : Use power MOSFETS or power transistors (MJE series). Non-PWM and bidirectional : Relay H-Bridge You have to combine both the above to get bidirectional pwm control. PWM on the power supply and direction using the relays. Title: Re: Ways to attach Battery. Post by: MohitJindal on January 16, 2013, 01:38:29 PM I want to combine both but how? Do you have any circuit diagram ? Any readymade part you know ?
Title: Re: Ways to attach Battery. Post by: MohitJindal on January 17, 2013, 03:08:44 PM I attached the motor circuit. I hope that will help you to understand. All I want is to give more current to the DC motor without burning the circuit. :help:
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